327 lines
10 KiB
Plaintext
327 lines
10 KiB
Plaintext
/**
|
|
* EnvVarUpdate.nsh
|
|
* : Environmental Variables: append, prepend, and remove entries
|
|
*
|
|
* WARNING: If you use StrFunc.nsh header then include it before this file
|
|
* with all required definitions. This is to avoid conflicts
|
|
*
|
|
* Usage:
|
|
* ${EnvVarUpdate} "ResultVar" "EnvVarName" "Action" "RegLoc" "PathString"
|
|
*
|
|
* Credits:
|
|
* Version 1.0
|
|
* * Cal Turney (turnec2)
|
|
* * Amir Szekely (KiCHiK) and e-circ for developing the forerunners of this
|
|
* function: AddToPath, un.RemoveFromPath, AddToEnvVar, un.RemoveFromEnvVar,
|
|
* WriteEnvStr, and un.DeleteEnvStr
|
|
* * Diego Pedroso (deguix) for StrTok
|
|
* * Kevin English (kenglish_hi) for StrContains
|
|
* * Hendri Adriaens (Smile2Me), Diego Pedroso (deguix), and Dan Fuhry
|
|
* (dandaman32) for StrReplace
|
|
*
|
|
* Version 1.1 (compatibility with StrFunc.nsh)
|
|
* * techtonik
|
|
*
|
|
* http://nsis.sourceforge.net/Environmental_Variables:_append%2C_prepend%2C_and_remove_entries
|
|
*
|
|
*/
|
|
|
|
|
|
!ifndef ENVVARUPDATE_FUNCTION
|
|
!define ENVVARUPDATE_FUNCTION
|
|
!verbose push
|
|
!verbose 3
|
|
!include "LogicLib.nsh"
|
|
!include "WinMessages.NSH"
|
|
!include "StrFunc.nsh"
|
|
|
|
; ---- Fix for conflict if StrFunc.nsh is already includes in main file -----------------------
|
|
!macro _IncludeStrFunction StrFuncName
|
|
!ifndef ${StrFuncName}_INCLUDED
|
|
${${StrFuncName}}
|
|
!endif
|
|
!ifndef Un${StrFuncName}_INCLUDED
|
|
${Un${StrFuncName}}
|
|
!endif
|
|
!define un.${StrFuncName} "${Un${StrFuncName}}"
|
|
!macroend
|
|
|
|
!insertmacro _IncludeStrFunction StrTok
|
|
!insertmacro _IncludeStrFunction StrStr
|
|
!insertmacro _IncludeStrFunction StrRep
|
|
|
|
; ---------------------------------- Macro Definitions ----------------------------------------
|
|
!macro _EnvVarUpdateConstructor ResultVar EnvVarName Action Regloc PathString
|
|
Push "${EnvVarName}"
|
|
Push "${Action}"
|
|
Push "${RegLoc}"
|
|
Push "${PathString}"
|
|
Call EnvVarUpdate
|
|
Pop "${ResultVar}"
|
|
!macroend
|
|
!define EnvVarUpdate '!insertmacro "_EnvVarUpdateConstructor"'
|
|
|
|
!macro _unEnvVarUpdateConstructor ResultVar EnvVarName Action Regloc PathString
|
|
Push "${EnvVarName}"
|
|
Push "${Action}"
|
|
Push "${RegLoc}"
|
|
Push "${PathString}"
|
|
Call un.EnvVarUpdate
|
|
Pop "${ResultVar}"
|
|
!macroend
|
|
!define un.EnvVarUpdate '!insertmacro "_unEnvVarUpdateConstructor"'
|
|
; ---------------------------------- Macro Definitions end-------------------------------------
|
|
|
|
;----------------------------------- EnvVarUpdate start----------------------------------------
|
|
!define hklm_all_users 'HKLM "SYSTEM\CurrentControlSet\Control\Session Manager\Environment"'
|
|
!define hkcu_current_user 'HKCU "Environment"'
|
|
|
|
!macro EnvVarUpdate UN
|
|
|
|
Function ${UN}EnvVarUpdate
|
|
|
|
Push $0
|
|
Exch 4
|
|
Exch $1
|
|
Exch 3
|
|
Exch $2
|
|
Exch 2
|
|
Exch $3
|
|
Exch
|
|
Exch $4
|
|
Push $5
|
|
Push $6
|
|
Push $7
|
|
Push $8
|
|
Push $9
|
|
Push $R0
|
|
|
|
/* After this point:
|
|
-------------------------
|
|
$0 = ResultVar (returned)
|
|
$1 = EnvVarName (input)
|
|
$2 = Action (input)
|
|
$3 = RegLoc (input)
|
|
$4 = PathString (input)
|
|
$5 = Orig EnvVar (read from registry)
|
|
$6 = Len of $0 (temp)
|
|
$7 = tempstr1 (temp)
|
|
$8 = Entry counter (temp)
|
|
$9 = tempstr2 (temp)
|
|
$R0 = tempChar (temp) */
|
|
|
|
; Step 1: Read contents of EnvVarName from RegLoc
|
|
;
|
|
; Check for empty EnvVarName
|
|
${If} $1 == ""
|
|
SetErrors
|
|
DetailPrint "ERROR: EnvVarName is blank"
|
|
Goto EnvVarUpdate_Restore_Vars
|
|
${EndIf}
|
|
|
|
; Check for valid Action
|
|
${If} $2 != "A"
|
|
${AndIf} $2 != "P"
|
|
${AndIf} $2 != "R"
|
|
SetErrors
|
|
DetailPrint "ERROR: Invalid Action - must be A, P, or R"
|
|
Goto EnvVarUpdate_Restore_Vars
|
|
${EndIf}
|
|
|
|
${If} $3 == HKLM
|
|
ReadRegStr $5 ${hklm_all_users} $1 ; Get EnvVarName from all users into $5
|
|
${ElseIf} $3 == HKCU
|
|
ReadRegStr $5 ${hkcu_current_user} $1 ; Read EnvVarName from current user into $5
|
|
${Else}
|
|
SetErrors
|
|
DetailPrint 'ERROR: Action is [$3] but must be "HKLM" or HKCU"'
|
|
Goto EnvVarUpdate_Restore_Vars
|
|
${EndIf}
|
|
|
|
; Check for empty PathString
|
|
${If} $4 == ""
|
|
SetErrors
|
|
DetailPrint "ERROR: PathString is blank"
|
|
Goto EnvVarUpdate_Restore_Vars
|
|
${EndIf}
|
|
|
|
; Make sure we've got some work to do
|
|
${If} $5 == ""
|
|
${AndIf} $2 == "R"
|
|
SetErrors
|
|
DetailPrint "$1 is empty - Nothing to remove"
|
|
Goto EnvVarUpdate_Restore_Vars
|
|
${EndIf}
|
|
|
|
; Step 2: Scrub EnvVar
|
|
;
|
|
StrCpy $0 $5 ; Copy the contents to $0
|
|
; Remove spaces around semicolons (NOTE: spaces before the 1st entry or
|
|
; after the last one are not removed here but instead in Step 3)
|
|
${If} $0 != "" ; If EnvVar is not empty ...
|
|
${Do}
|
|
${${UN}StrStr} $7 $0 " ;"
|
|
${If} $7 == ""
|
|
${ExitDo}
|
|
${EndIf}
|
|
${${UN}StrRep} $0 $0 " ;" ";" ; Remove '<space>;'
|
|
${Loop}
|
|
${Do}
|
|
${${UN}StrStr} $7 $0 "; "
|
|
${If} $7 == ""
|
|
${ExitDo}
|
|
${EndIf}
|
|
${${UN}StrRep} $0 $0 "; " ";" ; Remove ';<space>'
|
|
${Loop}
|
|
${Do}
|
|
${${UN}StrStr} $7 $0 ";;"
|
|
${If} $7 == ""
|
|
${ExitDo}
|
|
${EndIf}
|
|
${${UN}StrRep} $0 $0 ";;" ";"
|
|
${Loop}
|
|
|
|
; Remove a leading or trailing semicolon from EnvVar
|
|
StrCpy $7 $0 1 0
|
|
${If} $7 == ";"
|
|
StrCpy $0 $0 "" 1 ; Change ';<EnvVar>' to '<EnvVar>'
|
|
${EndIf}
|
|
StrLen $6 $0
|
|
IntOp $6 $6 - 1
|
|
StrCpy $7 $0 1 $6
|
|
${If} $7 == ";"
|
|
StrCpy $0 $0 $6 ; Change ';<EnvVar>' to '<EnvVar>'
|
|
${EndIf}
|
|
; DetailPrint "Scrubbed $1: [$0]" ; Uncomment to debug
|
|
${EndIf}
|
|
|
|
/* Step 3. Remove all instances of the target path/string (even if "A" or "P")
|
|
$6 = bool flag (1 = found and removed PathString)
|
|
$7 = a string (e.g. path) delimited by semicolon(s)
|
|
$8 = entry counter starting at 0
|
|
$9 = copy of $0
|
|
$R0 = tempChar */
|
|
|
|
${If} $5 != "" ; If EnvVar is not empty ...
|
|
StrCpy $9 $0
|
|
StrCpy $0 ""
|
|
StrCpy $8 0
|
|
StrCpy $6 0
|
|
|
|
${Do}
|
|
${${UN}StrTok} $7 $9 ";" $8 "0" ; $7 = next entry, $8 = entry counter
|
|
|
|
${If} $7 == "" ; If we've run out of entries,
|
|
${ExitDo} ; were done
|
|
${EndIf} ;
|
|
|
|
; Remove leading and trailing spaces from this entry (critical step for Action=Remove)
|
|
${Do}
|
|
StrCpy $R0 $7 1
|
|
${If} $R0 != " "
|
|
${ExitDo}
|
|
${EndIf}
|
|
StrCpy $7 $7 "" 1 ; Remove leading space
|
|
${Loop}
|
|
${Do}
|
|
StrCpy $R0 $7 1 -1
|
|
${If} $R0 != " "
|
|
${ExitDo}
|
|
${EndIf}
|
|
StrCpy $7 $7 -1 ; Remove trailing space
|
|
${Loop}
|
|
${If} $7 == $4 ; If string matches, remove it by not appending it
|
|
StrCpy $6 1 ; Set 'found' flag
|
|
${ElseIf} $7 != $4 ; If string does NOT match
|
|
${AndIf} $0 == "" ; and the 1st string being added to $0,
|
|
StrCpy $0 $7 ; copy it to $0 without a prepended semicolon
|
|
${ElseIf} $7 != $4 ; If string does NOT match
|
|
${AndIf} $0 != "" ; and this is NOT the 1st string to be added to $0,
|
|
StrCpy $0 $0;$7 ; append path to $0 with a prepended semicolon
|
|
${EndIf} ;
|
|
|
|
IntOp $8 $8 + 1 ; Bump counter
|
|
${Loop} ; Check for duplicates until we run out of paths
|
|
${EndIf}
|
|
|
|
; Step 4: Perform the requested Action
|
|
;
|
|
${If} $2 != "R" ; If Append or Prepend
|
|
${If} $6 == 1 ; And if we found the target
|
|
DetailPrint "Target is already present in $1. It will be removed and"
|
|
${EndIf}
|
|
${If} $0 == "" ; If EnvVar is (now) empty
|
|
StrCpy $0 $4 ; just copy PathString to EnvVar
|
|
${If} $6 == 0 ; If found flag is either 0
|
|
${OrIf} $6 == "" ; or blank (if EnvVarName is empty)
|
|
DetailPrint "$1 was empty and has been updated with the target"
|
|
${EndIf}
|
|
${ElseIf} $2 == "A" ; If Append (and EnvVar is not empty),
|
|
StrCpy $0 $0;$4 ; append PathString
|
|
${If} $6 == 1
|
|
DetailPrint "appended to $1"
|
|
${Else}
|
|
DetailPrint "Target was appended to $1"
|
|
${EndIf}
|
|
${Else} ; If Prepend (and EnvVar is not empty),
|
|
StrCpy $0 $4;$0 ; prepend PathString
|
|
${If} $6 == 1
|
|
DetailPrint "prepended to $1"
|
|
${Else}
|
|
DetailPrint "Target was prepended to $1"
|
|
${EndIf}
|
|
${EndIf}
|
|
${Else} ; If Action = Remove
|
|
${If} $6 == 1 ; and we found the target
|
|
DetailPrint "Target was found and removed from $1"
|
|
${Else}
|
|
DetailPrint "Target was NOT found in $1 (nothing to remove)"
|
|
${EndIf}
|
|
${If} $0 == ""
|
|
DetailPrint "$1 is now empty"
|
|
${EndIf}
|
|
${EndIf}
|
|
|
|
; Step 5: Update the registry at RegLoc with the updated EnvVar and announce the change
|
|
;
|
|
ClearErrors
|
|
${If} $3 == HKLM
|
|
WriteRegExpandStr ${hklm_all_users} $1 $0 ; Write it in all users section
|
|
${ElseIf} $3 == HKCU
|
|
WriteRegExpandStr ${hkcu_current_user} $1 $0 ; Write it to current user section
|
|
${EndIf}
|
|
|
|
IfErrors 0 +4
|
|
MessageBox MB_OK|MB_ICONEXCLAMATION "Could not write updated $1 to $3"
|
|
DetailPrint "Could not write updated $1 to $3"
|
|
Goto EnvVarUpdate_Restore_Vars
|
|
|
|
; "Export" our change
|
|
SendMessage ${HWND_BROADCAST} ${WM_WININICHANGE} 0 "STR:Environment" /TIMEOUT=5000
|
|
|
|
EnvVarUpdate_Restore_Vars:
|
|
;
|
|
; Restore the user's variables and return ResultVar
|
|
Pop $R0
|
|
Pop $9
|
|
Pop $8
|
|
Pop $7
|
|
Pop $6
|
|
Pop $5
|
|
Pop $4
|
|
Pop $3
|
|
Pop $2
|
|
Pop $1
|
|
Push $0 ; Push my $0 (ResultVar)
|
|
Exch
|
|
Pop $0 ; Restore his $0
|
|
|
|
FunctionEnd
|
|
|
|
!macroend ; EnvVarUpdate UN
|
|
!insertmacro EnvVarUpdate ""
|
|
!insertmacro EnvVarUpdate "un."
|
|
;----------------------------------- EnvVarUpdate end----------------------------------------
|
|
|
|
!verbose pop
|
|
!endif |